NEW YORK — Accused “Monroe Madam” Anna Gristina got some bad news in a Manhattan courtroom Thursday as a judge denied her request to toss the charges for what she'd claimed was insufficient evidence and “egregious prosecutorial conduct.”

But Manhattan Supreme Court Justice Juan Merchan gave Gristina good news as well – by signaling that her October trial will be limited to a single promoting prostitution charge tried over the course of a single week.

“This is a very narrow issue,” the judge warned prosecutors, who said that they may want to introduce wiretaps and witness testimony showing that Gristina was running a business extending beyond the single, undercover-sting-based count of money for sex currently alleged.

“This is going to be a very short case,” the judge warned. “I'm not going to allow this to just get out of hand.”

Gristina lives in Monroe with her husband, Kelvin Gorr, and her four children, where they run a pig rescue operation. She was arrested in February after prosecutors accused her of running a brothel on the Upper East Side.

Gristina is looking forward to trial, her lawyer, Norm Pattis, told reporters after the proceeding.

“She is not guilty, but even if she were convicted she has done her time. She has done four months,” Pattis said. “What's driving this case? Do we really, really want to deprive a child of his mother?”

“It was not devastating at all” for Gristina to hear that her co-defendant and accused partner madam, Jaynie Mae Baker, agreed this week to cut a cooperation plea deal with prosecutors, the lawyer said.

Gristina, 43, is the only one of five defendants in the five-year escort ring investigation who has steadfastly refused to squeal in the case.

Gristina's longtime friend and alleged money-launderer, Jonas Gayer, two of her alleged $2,000-an-hour hookers, and now Baker have all flipped against her, according to multiple sources and court records.